Run: 2026-07-09-01KX40Q54G7FP03XM6FPHA2TKN

Run Details

Duration:
15.5s
Cost:
$0.015748
Provider:
OpenAI

Model input

System
You are an expert novelist with a gift for vivid, immersive prose. You write in tight third-person limited point of view with a strong narrative voice. Your prose is clean, precise, and engaging — you favor strong verbs, concrete details, and natural-sounding dialogue. You will be given a story bible (codex) containing canonical details about characters, locations, items, and lore. Use these details to ground your writing in the established world. Stay consistent with the codex. Write only the prose of the scene. Do not include titles, chapter headings, markdown formatting, or any commentary before or after the scene.
User/Human
<codex> <character id="4412" name="Aurora Carter" aliases="Rory, Laila, Aurora, Carter, Malphora" pronouns="she/her" species="Human" storyRole="Protagonist"> <eyeColor>bright blue</eyeColor> <hair>straight shoulder-length black</hair> <height>5'6"</height> <age>25</age> <scar>small crescent-shaped scar on her left wrist from a childhood accident</scar> <description>Aurora, referred to by her friends as Rory, is cool-headed, intelligent, and known for quick out-of-the-box thinking.</description> <backstory>Born in Cardiff to an Irish barrister father (Brendan Carter) and Welsh teacher mother (Jennifer Carter née Ellis), Rory reluctantly pursued Pre-Law at Cardiff University. She fled to London at the behest of her childhood friend Eva after leaving an abusive ex named Evan. By day, Rory works part-time as a delivery person for Yu-Fei Cheung's Golden Empress restaurant. She lives in a flat above Silas' bar.</backstory> </character> <location id="861" name="The Fae Grove" aliases="Isolde's grove, Richmond grove, the Grove" realm="Earth (Fae-touched)"> <parkLocation>Richmond Park</parkLocation> <standingStones>ancient oak standing stones mark the boundary</standingStones> <timeBehavior>time moves differently — an hour inside can be minutes or days outside</timeBehavior> <flora>wildflowers bloom year-round</flora> <description>A hidden clearing that exists in a pocket between Earth and the Fae realm.</description> </location> <item id="2001" name="Heartstone Pendant" aliases="the pendant, Heartstone" type="Artifact" origin="Dymas"> <gemstoneColor>deep crimson</gemstoneColor> <chainMaterial>silver chain</chainMaterial> <size>roughly the size of a thumbnail</size> <behavior>pulses faintly with warmth when near a Hel portal</behavior> <glow>faint inner glow</glow> <description>Given to Aurora by an unknown benefactor.</description> </item> </codex> Write a fully fleshed out scene of at least 1000 words in the horror genre. A character is alone in a strange, isolated place at night. They came here for a reason, but something feels off from the moment they arrive. The wrongness builds slowly — sounds that shouldn't be there, things that move at the edge of vision, a growing certainty that they are not alone. Build tension through restraint, not through gore. Use the codex entries above as your world reference for the character and setting. Only include the prose of the scene without any markdown or commentary.

Model response

AI
Aurora Carter knew Richmond Park well enough to distrust it after dark. In daylight, the park opened wide beneath the sky, all old oaks and tawny grass and deer paths pressed into the earth by generations of careless feet. At night, the trees closed ranks. The gates were shut, the roads emptied, and every familiar distance became uncertain. A stand of trees that should have been twenty minutes away appeared at the end of a path she had never seen before. She stopped beneath the last working streetlamp and checked her phone. 11:47 p.m. No signal. The battery, which had been at sixty-two percent when she left the flat, showed nineteen. “Great,” she muttered. Her voice went nowhere. It seemed to sink into the dark without even the courtesy of an echo. Rory slipped the phone into her coat pocket and touched the pendant at her throat. The silver chain was cold against her skin. The deep-crimson stone rested beneath her shirt, faintly warm, as though someone had pressed a coal into its heart. That was why she had come. Three times that evening, the pendant had pulsed against her sternum. Not its usual soft throb, but a quick, insistent beat. Every time, the sensation had drawn her attention toward Richmond Park. Not south or east or toward any particular landmark. Toward the park as a whole. She had tried ignoring it. She had delivered a curry to Kensington, returned a stack of containers to the Golden Empress, and sat at the bar downstairs while Silas argued with a television that had lost its signal. The pendant had kept beating. At half past ten, she had given in. She had told herself she was following a clue. She had told herself she was being practical. If the pendant reacted to Hel portals, and something in Richmond Park had woken it, she needed to know what. The more honest explanation was that it had frightened her. The pendants’ warmth had always felt like a warning. Tonight it had felt like a summons. She stepped beyond the light. The path under her boots was hard and pale, powdered with frost despite the mild October air. Bare branches knitted overhead. The wind moved through them with a dry, whispering sound, but the grass along either side remained perfectly still. Rory glanced back. The streetlamp had already vanished. Not dimmed. Vanished. Behind her stood only a wall of black trees, their trunks pale as bone where the moon touched them. She took out her phone again. The screen lit her face blue. 11:49. Two minutes since the lamp. That was possible. She had walked farther than she thought. It was also the first wrong thing she could not explain away. She turned in a slow circle. The park looked the same in every direction: trees, frost, black sky. No city glow. No distant traffic. No airplane lights crossing overhead. Then, somewhere to her left, a child laughed. Rory froze. It was a small sound. Breathless, delighted. The kind of laugh that came from a child trying not to be heard. Her hand tightened around the phone. “Hello?” The laugh stopped. She waited. A fox barked far away. Something rustled in the undergrowth. Then came three soft knocks from inside one of the trees. Knock. Knock. Knock. Rory’s skin tightened across her shoulders. She knew trees made sounds. Branches shifted. Bark split. Sap moved. She knew animals nested in hollows and wind could turn a loose limb into a drummer’s hand. She did not know what made three deliberate knocks, paused, and then knocked once more. The pendant warmed. She looked down. A dull red gleam leaked through her shirt. “Not helpful,” she whispered. The path curved between the trees. She followed it because staying in place had begun to feel worse. Her footsteps sounded too loud, each crunch of frost amplified and immediately swallowed. At the edge of her vision, something moved between two trunks. Rory snapped her head toward it. Nothing. She stood still, studying the darkness. The trees were too close together here. Their branches twisted across one another, making gaps that looked almost intentional. Beyond them, pale flowers dotted the ground. Flowers. She moved closer. Tiny white blossoms covered the grass beneath the oaks. Some were blue, some yellow, some the red of old bruises. They bloomed in thick drifts, their petals crisp and perfect despite the frost. She recognized foxglove, primrose, poppy. Others she had never seen. A warm, sweet scent hung over them. It reminded her of honey left too long in a jar. The path ended at a line of standing stones. Ancient oak, the stories called them, though they were not trees. They were tall slabs of dark stone, each rounded and ridged like bark, planted in a rough circle around the clearing. Their surfaces gleamed with damp. Pale markings ran across them in shallow grooves, nearly hidden beneath moss. Rory stopped before the boundary. The pendant gave one strong pulse. Warmth spread through her chest. “So this is it,” she said. The clearing beyond the stones was wrong in a way that did not announce itself. It looked like a clearing. There was a soft carpet of grass, a low hill at the center, and more flowers than any season should permit. Moonlight lay across it, silver and clean. But the air above the grass trembled faintly, as if the whole place were reflected in water. She had seen a Hel portal once. She had not understood what she was looking at until it opened. Space had peeled back like wet paper, showing a depth behind the world that had no stars, no ground, and no bottom. The memory had haunted her for months. This was not that. Not yet. She stepped between two stones. The cold vanished. Warm air pressed against her face, damp and fragrant. Behind her, the frost made a brittle line along the threshold, but it did not cross it. Rory looked back. The path was still there. The trees stood on the other side. Yet they seemed farther away now, stretched thin by distance. The space between the stones had become a dark doorway. She took one more step. The clearing swallowed the sound of her boot. Her phone vibrated. Rory pulled it out. The screen showed 11:52. She frowned. She had been inside less than a minute. A notification appeared. No Caller ID. She stared at it until the screen went dark. A second later, it vibrated again. The same notification. Her thumb hovered over it. She did not open the message. Instead, she put the phone away and walked toward the low hill. The flowers brushed her knees. Their stems bent as she passed, then lifted behind her. One pale blossom turned to follow her. Rory noticed that because she was looking back. She stopped. All around her, flowers nodded in the warm air. She turned forward again. The hill had changed. It was higher now. Not much—perhaps a foot—but enough to make the crown of it disappear beyond the line of her sight. At the top stood a crooked tree with no leaves. Something hung from one of its branches. A bell, she thought. No. A lantern. No. A person. Rory’s breath caught. She backed away, then forced herself to look again. There was nothing at the top of the hill but the tree. The pendant’s glow faded beneath her shirt. “Okay,” she said, more sharply this time. “I’m leaving.” The words sounded absurdly small. She turned toward the stones. The clearing had lengthened. The boundary stood beyond the flowers, but the distance between them had doubled. The stones looked smaller, their tops now level with the horizon. The path beyond had vanished altogether. Rory did not run. Running would mean admitting panic, and panic made bad decisions. She walked quickly, counting her steps. Ten. Twenty. Thirty. The stones did not come closer. At forty, a sound rose behind her. Not a laugh this time. A footstep. Soft. Careful. Bare. Rory stopped counting. Another footstep followed. Then another. The thing behind her was walking through the flowers, taking care not to crush them. Rory kept her eyes on the stones. Her left wrist began to ache beneath her sleeve, the old crescent scar prickling as if a cold finger traced it. She remembered being eight years old, falling against a broken gate, her mother shouting for a towel. She remembered the crescent of blood and the strange calm that had come afterward. The footsteps stopped. She could feel someone watching her back. Not see. Feel. A pressure between her shoulder blades. A patient attention. It waited for her to turn. Rory reached into her coat pocket and wrapped her hand around her phone. The device was warm now, almost hot. She opened the camera without looking behind her. The screen showed the clearing in grainy blue-black. The stones were closer in the display than they were in front of her. At the top of the hill, the crooked tree bent toward the camera. Under it stood a figure. Tall. Thin. Its head tilted sharply to one side. Rory’s fingers went numb. The figure lifted one arm. The camera image shuddered. The figure’s hand pressed against the inside of the screen, leaving a pale blur over the lens. Rory dropped the phone. It landed faceup among the flowers. The screen went black. Behind her, something whispered, “Aurora.” No one called her that except her parents. Even then, her mother had used it only when Rory was in trouble. She did not turn. The voice came again, closer. “Aurora Carter.” Her name seemed to pass through the clearing in layers, spoken by a dozen mouths at slightly different distances. She ran. The flowers whipped against her legs. The ground rolled beneath her boots, soft and uneven, but she kept her balance. The standing stones grew larger with every step. Their grooves were not markings. They were letters, carved deep into the stone. She reached the gap and threw herself through it. Cold struck her face. She stumbled onto the path and fell hard against one knee. Pain shot up her leg. For a moment she could hear nothing but her own breath. Then the knocking began. On the other side of the stones. Knock. Knock. Knock. Rory pushed herself upright. The clearing beyond looked empty. The flowers bowed gently in the warm air. The crooked tree stood on the hill. There was still no figure beneath it. She backed away from the stones. Her phone lay in her hand. She did not remember picking it up. The screen was lit. The time read 11:53. One new message waited beneath the clock. You should not have left me alone. Rory’s pulse stumbled. The message had been sent from her own number. She looked toward the trees. Far ahead, beyond the dark trunks, a streetlamp flickered into existence. For one wild second, relief broke through her fear. Then she saw the light was not behind her. It stood inside the clearing, at the top of the hill, where the crooked tree had been. Beneath it, something had begun walking toward the stones. It moved like a person who had forgotten how legs worked. Rory stepped backward. The trees around her leaned in. And from somewhere close beside her ear, a voice whispered, warm with amusement, “You came all this way to find the door.”
created_at"2026-07-09T18:02:26.334Z" 7/9/2026, 6:02:26 PM
model"openai/gpt-5.6-luna-20260709"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1654
moderation_latency(null)
generation_time14985
tokens_prompt812
tokens_completion3172
native_tokens_prompt742
native_tokens_completion2501
native_tokens_completion_images0
native_tokens_reasoning103
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
service_tier"default"
usage0.015748
router(null)
provider_responses
0
endpoint_id"eebea444-34a5-4642-a766-cb319471d33a"
id"resp_07f53b5e0093f116016a4fe23278588193a8a81dd039790713"
is_byokfalse
latency299
model_permaslug"openai/gpt-5.6-luna-20260709"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1783620146-rECx12C0efAB4WGKQpII"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1783620146-Hpl8P6bp95o2Eq9FAg77"
upstream_id"resp_07f53b5e0093f116016a4fe23278588193a8a81dd039790713"
total_cost0.015748
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags6
adverbTagCount0
adverbTags(empty)
dialogueSentences9
tagDensity0.667
leniency1
rawRatio0
effectiveRatio0
84.33% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1914
totalAiIsmAdverbs6
found
0
adverb"perfectly"
count1
1
adverb"sharply"
count2
2
adverb"quickly"
count1
3
adverb"slightly"
count1
4
adverb"gently"
count1
highlights
0"perfectly"
1"sharply"
2"quickly"
3"slightly"
4"gently"
100.00% AI-ism character names
Target: 0 AI-default names (17 tracked, −20% each)
codexExemptions(empty)
found(empty)
100.00% AI-ism location names
Target: 0 AI-default location names (33 tracked, −20% each)
codexExemptions(empty)
found(empty)
55.59% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1914
totalAiIsms17
found
0
word"familiar"
count1
1
word"echo"
count1
2
word"pulsed"
count1
3
word"throb"
count1
4
word"warmth"
count2
5
word"footsteps"
count2
6
word"perfect"
count1
7
word"pulse"
count2
8
word"trembled"
count1
9
word"vibrated"
count2
10
word"traced"
count1
11
word"could feel"
count1
12
word"flickered"
count1
highlights
0"familiar"
1"echo"
2"pulsed"
3"throb"
4"warmth"
5"footsteps"
6"perfect"
7"pulse"
8"trembled"
9"vibrated"
10"traced"
11"could feel"
12"flickered"
100.00% Cliché density
Target: ≤1 cliche(s) per 800-word window
totalCliches0
maxInWindow0
found(empty)
highlights(empty)
100.00% Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells0
narrationSentences259
matches(empty)
100.00% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount0
hedgeCount3
narrationSentences259
filterMatches(empty)
hedgeMatches
0"seemed to"
1"began to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences262
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen33
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans0
markdownWords0
totalWords1912
ratio0
matches(empty)
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions5
unquotedAttributions0
matches(empty)
96.84% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions42
wordCount1881
uniqueNames13
maxNameDensity1.06
worstName"Rory"
maxWindowNameDensity2
worstWindowName"Rory"
discoveredNames
Carter1
Richmond3
Park3
Kensington1
Golden1
Empress1
Silas1
Hel2
Tonight1
October1
Caller1
Rory20
Knock6
persons
0"Carter"
1"Silas"
2"Rory"
places
0"Richmond"
1"Park"
2"Kensington"
3"Golden"
4"Hel"
globalScore0.968
windowScore1
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences142
glossingSentenceCount2
matches
0"felt like a summons"
1"seemed farther away now, stretched thin by distance"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches1
per1kWords0.523
wordCount1912
matches
0"Not its usual soft throb, but a quick, insistent beat"
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount1
totalSentences262
matches
0"was that it"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs163
mean11.73
std12.67
cv1.08
sampleLengths
012
169
211
32
417
53
618
742
86
947
1043
118
1237
1310
1416
155
1640
173
185
1922
2012
211
225
2322
2429
258
262
2721
286
291
303
312
3221
331
341
351
366
3728
3815
393
4011
414
4231
4311
446
451
4632
471
483
4943
99.84% Passive voice overuse
Target: ≤2% passive sentences
passiveCount4
totalSentences259
matches
0"were shut"
1"were reflected"
2"was lit"
3"been sent"
98.68% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount5
totalVerbs329
matches
0"was following"
1"was being"
2"was looking"
3"was looking"
4"was walking"
100.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount2
semicolonCount0
flaggedSentences1
totalSentences262
ratio0.004
matches
0"Not much—perhaps a foot—but enough to make the crown of it disappear beyond the line of her sight."
100.00% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount336
adjectiveStacks0
stackExamples(empty)
adverbCount6
adverbRatio0.017857142857142856
lyAdverbCount1
lyAdverbRatio0.002976190476190476
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences262
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences262
mean7.3
std5.28
cv0.723
sampleLengths
012
127
26
313
423
511
62
72
815
93
104
1114
1215
138
1419
156
1611
1710
1811
199
206
215
2233
235
248
259
268
2720
2810
299
307
315
3217
334
3419
353
365
372
381
3919
406
416
421
435
443
457
4612
476
4812
493
39.66% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats27
diversityRatio0.29118773946360155
totalSentences261
uniqueOpeners76
77.16% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount5
totalSentences216
matches
0"Then, somewhere to her left,"
1"Then came three soft knocks"
2"Instead, she put the phone"
3"Then the knocking began."
4"Then she saw the light"
ratio0.023
97.78% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount66
totalSentences216
matches
0"She stopped beneath the last"
1"Her voice went nowhere."
2"It seemed to sink into"
3"She had tried ignoring it."
4"She had delivered a curry"
5"She had told herself she"
6"She had told herself she"
7"She stepped beyond the light."
8"She took out her phone"
9"She had walked farther than"
10"It was also the first"
11"She turned in a slow"
12"It was a small sound."
13"Her hand tightened around the"
14"She knew trees made sounds."
15"She knew animals nested in"
16"She did not know what"
17"She looked down."
18"She followed it because staying"
19"Her footsteps sounded too loud,"
ratio0.306
78.06% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount165
totalSentences216
matches
0"Aurora Carter knew Richmond Park"
1"The gates were shut, the"
2"A stand of trees that"
3"She stopped beneath the last"
4"The battery, which had been"
5"Her voice went nowhere."
6"It seemed to sink into"
7"Rory slipped the phone into"
8"The silver chain was cold"
9"The deep-crimson stone rested beneath"
10"That was why she had"
11"Every time, the sensation had"
12"She had tried ignoring it."
13"She had delivered a curry"
14"The pendant had kept beating."
15"She had told herself she"
16"She had told herself she"
17"The more honest explanation was"
18"Tonight it had felt like"
19"She stepped beyond the light."
ratio0.764
46.30% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount2
totalSentences216
matches
0"If the pendant reacted to"
1"Even then, her mother had"
ratio0.009
99.57% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences66
technicalSentenceCount4
matches
0"The deep-crimson stone rested beneath her shirt, faintly warm, as though someone had pressed a coal into its heart."
1"She had delivered a curry to Kensington, returned a stack of containers to the Golden Empress, and sat at the bar downstairs while Silas argued with a televisio…"
2"Her left wrist began to ache beneath her sleeve, the old crescent scar prickling as if a cold finger traced it."
3"She remembered being eight years old, falling against a broken gate, her mother shouting for a towel."
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags6
uselessAdditionCount0
matches(empty)
0.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags6
fancyCount4
fancyTags
0"she muttered (mutter)"
1"she whispered (whisper)"
2"Behind her something whispered (whisper)"
3"a voice whispered (whisper)"
dialogueSentences9
tagDensity0.667
leniency1
rawRatio0.667
effectiveRatio0.667
89.1264%